Which of the following architectures is not supported by ApsaraDB RDS for MySQL?

The single-node Basic Edition architecture, which can be used in test and non-core production environments

The high-avail ability architecture, in which primary and read-only nodes are deployed to implement automatic failovers

The three-node Enterprise Edition architecture, which ensures zero data loss

The serverless architecture, in which computing resources are charged based on the Pay-As-You-Go (PAYG) billing method